JPH11182389A - Engine start system and id code registration method for this system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an engine start system which cannot start an engine by ID codes of a replaced portable transmitter even if an engine start device is replaced. SOLUTION: This is an engine start system provided with a vehicle anti-theft device 200 and an engine start device 100. A memory 201 in which a second ID code of transmission data transmitted by a second portable transmitter 1 is stored is provided in the vehicle anti-theft device 200, and a code reading control part 5 extracts a second ID code from the transmission data. When this ID code coincides with a second ID code registered in a memory 8, the vehicle anti-theft device 200 checks the extracted second ID code against the second ID code stored in the memory 201. When they do not coincide, the vehicle anti-theft device 200 maintains locking for starting an engine, and when they coincide, it releases locking for starting the engine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control ID.
The present invention relates to an engine start system called, for example, a remote control engine starter for automatically starting an engine by inputting a code, and an ID code registration method of the system.

[0002]

2. Description of the Related Art Conventionally, an engine starting device for starting an engine by remote control has been known. In such an engine start device, the vehicle-side receiver receives engine start command data including an ID code transmitted from the portable transmitter, and the ID code in the received engine start command data is registered in advance. It is determined whether or not the codes match, and when it is determined that the codes match, the engine is started only under certain conditions.

On the other hand, there is known a vehicle anti-theft device called an immobilizer which can start an engine only under certain conditions in order to prevent the vehicle from being stolen.

In such a vehicle anti-theft device, for example, when a key having ID data in which a portable transceiver is inserted is inserted into a key slot of an ignition switch, the portable transceiver on the key side is transmitted from the fixed transceiver. Power is inductively supplied to the machine side, and upon receiving the induced power, an engine start command having a specific ID code is transmitted to the fixing transceiver, and the transmission data including the ID code is transmitted to the fixing transceiver. To determine whether the ID code of the transmission data matches the ID code registered in advance,
If they match, the engine can be started by key operation.

[0005] The two types of engine starting device and vehicle anti-theft device having these contradictory functions are combined into one,
2. Description of the Related Art An engine starting system capable of starting an engine by remote control has been proposed.

[0006]

However, in such an engine starting system, when the engine starting device is replaced, the ID of the portable transmitter which has been replaced is not recognized.
There was a problem that the engine could be started with the code.

[0007] The present invention has been made in view of the above problems, and has as its object to provide an engine start system in which the engine cannot be started with the ID code of the portable transmitter that has been replaced even if the engine starter is replaced. Is to provide.

[0008]

In order to achieve the above object, according to the present invention, a first ID code transmitted from a first portable transmitting means is received, and the received first ID code is received.
A vehicle anti-theft device that determines whether or not a code matches a pre-registered regular ID code, prohibits starting of the engine when not matching, and permits manual starting of the engine when matching. And the engine start command data including the second ID code transmitted from the second portable transmission means, and the second ID code in the received engine start command data is registered as a regular ID.
An engine starting device that determines whether the codes match, and starts the engine when the codes match.
A storage unit for storing an ID code is provided in the vehicle anti-theft device, and when the engine start device receives the engine start command data transmitted from the second portable transmission unit,
The vehicle anti-theft device determines whether the second ID code in the received engine start command data matches the regular ID code stored in the storage means,
When it is determined that they match, the prohibition of starting the engine is released, and the engine is started by the engine starting device.

According to a second aspect of the present invention, there is provided a first fixing receiving means for receiving a first ID code transmitted from the first portable transmitting means, a first storing means for storing a first regular ID code, It is determined whether or not the first regular ID code stored in the first storage means matches the first ID code received by the first fixing receiving means, and when it is determined that the first ID code is matched, manual engine start is permitted. A second anti-theft device having a first determining means for performing the operation, a second fixing receiving means for receiving engine start command data including a second ID code transmitted from the second portable transmitting means, and a second regular ID code. The second storage means for storing the data, and whether or not the second regular ID code stored in the second storage means matches the second ID code in the engine start command data received by the second fixing receiving means. Judgment That a second determining means, the second determination means second normal I stored in the second storage means
An engine starting system including an engine starting device that starts an engine when it is determined that the D code matches the second ID code received by the second fixing receiving means, and stores the second regular ID code. A third storage unit is provided in the vehicle anti-theft device, and the second determination unit matches the second regular ID code stored in the second storage unit with the second ID code received by the second fixing receiving unit. When it is determined that the second ID code has been received, a transmission unit for transmitting the received second ID code to the vehicle antitheft device is provided in the engine starting device, and the first determination unit determines the second ID code transmitted by the transmission unit and the third storage device. The second stored in the means
It is characterized in that it is determined whether or not the regular ID code matches, and when it is determined that the regular ID code matches, the engine is started by the engine starting device.

According to a third aspect of the present invention, when the second regular ID code is not stored in the second and third storage means, the first
When the engine is started by the portable transmission means, the vehicle anti-theft device and the engine start device are set to the registration mode, and when the engine start instruction data is transmitted from the second portable transmission means, the Second
The ID code is registered in the second and third storage means.

According to a fourth aspect of the present invention, there is provided the ID code registration method for the engine start system according to the first aspect, wherein the engine is started by the first portable transmission means when the second ID code is not stored in the storage means. Then, when the vehicle antitheft device is set to the registration mode and the engine start command data is transmitted from the second portable transmission means, the second ID code in the engine start command data is registered in the storage means. Features.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an engine start system and an ID code registration method according to the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an engine starting system. This engine starting system includes an engine starting device 100 and a vehicle anti-theft device 200.

The engine starting device 100 is a portable transmitter (second portable transmitting means) 1 of a remote control engine starter.
A vehicle-side fixing receiver (second fixing receiving means) 2 of a remote control engine starter for receiving transmission data including an ID code transmitted from the portable transmitter 1, a code decoding control unit 5, An ID code memory (second storage means) 8 for registering a regular ID code; a key switch detecting circuit 9 for detecting whether a key is inserted into an ignition switch (not shown) for starting the engine; A door switch detection circuit 10 for detecting blockage, a parking brake detection circuit 11 for detecting that a parking brake is being applied, a parking range detection circuit 12 for detecting whether or not a gear is engaged at a parking position;
A hood hood switch detection circuit 13 for detecting whether the hood is open, and a regulator L terminal detection circuit 1 for detecting the H level state of the L terminal of the regulator
4 and an engine start signal generation circuit 1 for generating an engine start signal including a battery signal, an ignition signal, an accessory switch signal (ACC signal), a starter signal, and the like.
5 and an F-code memory 18 in which an F-code for designating the content of an engine start instruction is registered. In addition, 3 and 4 are antennas.

The code decoding control unit 5 extracts the second ID code from the received data received by the
An ID code extraction circuit (second determining means) 6 to be stored in the AM 5A;
An ID code comparison circuit 7 that compares the second regular ID code registered in the D code memory 8 to determine whether or not they match each other; and a second ID stored in the RAM 5A.
A third communication circuit (transmission means) 1 for transmitting code data and the like to a first communication circuit 203 described later and for receiving other data transmitted from the first communication circuit 203;
02 and a CPU (not shown).

The vehicle anti-theft device 200 is a portable transceiver (first portable transmission means) provided on a key (not shown).
21 and a fixing transceiver (first fixing receiving means) 22 provided near a key insertion slot (not shown) of an ignition switch (not shown). Power is inductively supplied from the transceiver 22 to the key portable transceiver 21, and the portable transceiver 21 receives the induced power and transmits the engine start transmission data having the first ID data to the fixed transceiver 22. It has become. 33 and 34 are antennas.

The vehicle antitheft device 200 includes a code decoding control unit 23, a memory (first storage unit) 25 in which a first regular ID code is registered, and a memory (third storage) in which a second regular ID code is registered. Means) 201 and an engine start signal generating circuit 1 of the engine starter 100 under certain conditions.
ECCS circuit (engine starting means) that activates the engine ignition circuit 17 when each signal output from 5 is input
16, a power-on reset circuit 202 for power-on resetting the ECCS circuit 16 and the code decoding circuit 23 when an ignition switch (not shown) is turned on by a key operation, and detecting that the ignition switch is on. And an ACC switch detection circuit 29 for detecting that an ACC switch (not shown) is turned on. Reference numerals 36 and 37 denote OR circuits having one input terminal connected to the output terminals of the ignition switch detection circuit 28 and the ACC switch detection circuit 29 and the other input terminal connected to the output terminals 15b and 15c of the engine start signal generation circuit 15. is there.

The code decoding control section 23 extracts an ID code from the received data received by the fixed transceiver 22 and stores the ID code in the RAM 23A.
When an ID code comparison circuit (first determination means) 26 that compares the first regular ID code registered in the ID code memory 25 with the first ID code stored in the RAM 23A, ECCS code generation circuit 27 serving as an engine start permission signal generation circuit for outputting a signal for permitting engine start by ECCS circuit 16
And a first communication circuit 203 that communicates with the third communication circuit 102 of the engine starter 100 and the second communication circuit 204 of the ECCS circuit 16, and a CPU (not shown) and the like.

The ECCS circuit 16 includes a first communication circuit 203
Communication circuit 204 for communicating with the CPU, and a CPU (not shown)
And so on.

Next, the operation of the engine starting system will be described with reference to the time charts of FIGS.

First, a case where the second ID code is not registered in the ID code memory 8, 201 and the second ID code is registered will be described.

First, the key is inserted into the key insertion slot of the ignition switch and turned on to turn on the ignition switch (time T0 in FIG. 2). Then, in the process, the portable transceiver 21 provided on the key is changed from the fixed transceiver 22.
The portable transceiver 21 receives the induced power and transmits transmission data having the first ID code to the fixed transceiver 22. Then, the fixing transceiver 22
Receives the transmission data including the ID code, and the ID code extraction circuit 24 of the code decoding control unit 23 extracts the first ID code from the transmission data and stores it in the RAM 23A.
The ID code comparison circuit 26 compares the first ID code stored in the RAM 23A with the first regular ID code registered in the ID code memory 25 to determine whether or not they match. When the code decoding control unit 23 determines that the signal from each of the detection circuits 28 and 29 satisfies the condition, the ECCS circuit 16 is activated and the power-on reset circuit 40 activates the respective circuits 28, 29, 16 Is reset (time T1).

Thereafter, the initialization signal S1 is transmitted from the second communication circuit 204 of the ECCS circuit 16 to the first communication circuit 203 of the code decoding control unit 23, so that the code decoding control unit 23 is initialized and the first communication Circuit 203
, An engine start determination signal S2 is transmitted to the third communication circuit 102 of the engine starter 100 to determine the engine start method (time T2).

The third communication circuit 102 of the code decoding control unit 5
Receives the engine start determination signal S2, the code decoding control unit 5 outputs a signal indicating whether to start the engine by the engine starting device 100, start the engine by key operation, or register the second ID code. 3 from the third communication circuit 102 to the first communication circuit 203. Here, the second ID code is not registered in the memory 8, and the fixed receiver 2 is
Since no transmission data has been received from the third communication circuit 102, the code decoding control unit 5 determines that the mode is the registration mode.
Transmits the registration mode signal S3 to the first communication circuit 203 (time T3).

When the registration mode signal S3 is transmitted, the ECCS circuit 1 is transmitted from the first communication circuit 102 at time T4.
The initialization signal S4 is transmitted to the second communication circuit 204, and the ECCS circuit 16 is initialized by the initialization signal S4.

Then, the transmission data including the second ID code is transmitted from the portable transmitter 1. Then, the fixed receiver 2 receives the transmission data, the ID code extraction circuit 6 extracts the second ID code from the received data, and the extracted second ID code is stored in the RAM 5A.

On the other hand, when the first communication circuit 203 of the code decoding control section 23 receives the registration mode signal S3, the ID code request signal S5 is sent from the first communication circuit 203 after a predetermined time has passed since the reception of the registration mode signal S3. Third transmission circuit 1
02 (time T5). When the third transmission circuit 102 receives the ID code request signal S5, the second ID code stored in the RAM 5A of the code decoding control unit 5 is transmitted from the third communication circuit 102 to the first communication circuit 203 (time T6). .

When the third communication circuit 203 receives the second ID code, the code decoding control unit 23 determines whether or not the received second ID code matches, and if so, outputs an OK signal S6 to the first signal. The anti-theft indicator (not shown) transmitted from the communication circuit 203 to the third communication circuit 102 is lit, and the transmitted second ID code is I
It is registered in the D code memory 201. On the other hand, the code decoding control unit 5 also determines that the second ID code stored in the RAM 5A is I
It is registered in the D code memory 8.

That is, when the second ID code is not registered in the ID code memory 8, 201, the key is inserted into the key insertion slot of the ignition switch, the ignition switch is turned on, and the ID code is transmitted from the portable transmitter 1. When the transmission data including the ID code is transmitted, the above operation is automatically performed and the second ID code is stored in the ID code memory 8,201.
Registered in. As described above, since the registration is very simple, even if the vehicle is equipped with the vehicle anti-theft device 200, the engine start system can be incorporated by retrofitting the engine start device 100.

If the received second ID codes do not match, an NG signal is transmitted from the first communication circuit 203 to the third communication circuit 102, the anti-theft indicator (not shown) flashes, and it is notified that the operation is to be started again. .

Next, a case where the engine is started by the engine starting device 100 after the second ID code has been registered will be described.

When transmission data including an ID code is transmitted by the portable transmitter 1 (time T10 in FIG. 3), the fixed receiver 2 receives the transmission data. Then, the ID code extraction circuit 6 of the code decoding control unit 5 extracts the second ID code from the received data and stores it in the RAM 5A. Then, the comparison circuit 7 compares the second ID code stored in the RAM 5A with the second regular ID code registered in the ID code memory 8 to determine whether or not they match. The decryption control unit 5 controls the third communication circuit 102, the first communication circuit 203, and the second communication circuit 2
Then, the code decoding control unit 23 and the ECCS circuit 16 are activated via the terminal 04 (time T11).

At this time, the engine start signal generating circuit 15
Output a battery signal, an ignition signal, and an accessory switch signal.
Outputs a reset signal.

Thereafter, the initialization signal S1 is transmitted from the second communication circuit 204 of the ECCS circuit 16 to the first communication circuit 203 of the code decoding control unit 23, so that the code decoding control unit 23 is initialized and the first communication Circuit 203
, An engine start determination signal S2 for determining an engine start method is transmitted to the third communication circuit 102 of the engine starter 100 (time T12). Then, at time T13, an initialization signal S4 is transmitted from the first communication circuit 102 to the second communication circuit 204 of the ECCS circuit 16, and the ECCS circuit 16 is initialized by the initialization signal S4.

When the third communication circuit 102 of the code decoding control unit 5 receives the engine start determination signal S2, the code decoding control unit 5 starts the engine by the engine starting device 100 or starts the engine by key operation. Or a signal indicating whether to register the second ID code from the third communication circuit 102 to the first communication circuit 2.
Send to 03. Here, since the fixed receiver 2 has received the transmission data from the portable receiver 1 and the second ID code has already been registered in the ID code memory 8, the engine is started by the engine starting device 100. The third communication circuit 102 transmits an engine confirmation signal S10 from the third communication circuit 102 to the first communication circuit 203 (time T
14).

The first communication circuit 10 of the code decoding control unit 23
2 receives the star confirmation signal S10, the code decoding control unit 23 sends the ID code request signal S5 from the first communication circuit 102 to the third communication circuit 1 after a predetermined time has passed from the reception.
02 (time T15). The third transmission circuit 102
When the D code request signal S5 is received, the second ID code stored in the RAM 5A of the code decoding control unit 5 becomes the third ID code.
The signal is transmitted from the communication circuit 102 to the first communication circuit 203 (time T16).

The first communication circuit 20 of the code decoding control section 23
3 receives the second ID code, the ID code comparison circuit 26 determines whether the received second ID code matches the second regular ID code registered in the ID code memory 201, and When the code decoding control unit 23 determines that the operation has been performed, the code decoding control unit 23 causes the ECCS code generation circuit 27 to output an activation lock release signal, thereby enabling the operation of the ECCS circuit 16.

Then, the code decoding control section 23 sends an OK signal S11 indicating that the received second ID code matches the registered second regular ID code from the first communication circuit 203 to the third communication circuit. 102 (time T
17). When the third communication circuit 102 receives the OK signal S11, the code decoding control unit 5 determines whether or not all of the detection outputs of the detection circuits 9 to 14 are normal. Engine start signal creation circuit 15
Creates a starter signal and outputs it to the ECCS circuit 16.

Since the ECCS circuit 16 is enabled by the code signal from the ECCS code generation circuit 27 indicating the permission of engine start, the ECCS circuit 16 receives the starter signal output from the engine start signal generation circuit 15 and thereby ignites the engine. The circuit 17 is operated to start the engine.

When the code decoding control unit 23 determines that the second ID code received by the ID code comparison circuit 26 does not match the registered second regular ID code,
The NG signal S12 is sent from the first communication circuit 203 to the first communication circuit 1
02, which causes the theft indicator provided on the instrument unit to flash. The received second I
If the D code does not match the registered second ID code, no code signal is output from the ECCS code generation circuit 27, the ECCS circuit 16 remains inactive, and the engine start signal generation circuit Even if each signal is output from 15, the ECCS circuit 16 does not operate the engine ignition circuit 17. Therefore, the engine is not started.

As described above, when the transmission data is transmitted from the portable transmitter 1, the code decoding control unit 5 determines whether or not the second ID code of the transmission data matches the second ID code registered in the memory 8. And if they match,
The second ID code of the transmission data is transmitted to the code decryption control unit 23. The code decryption control unit 23 determines whether the transmitted second ID code matches the second regular ID code registered in the memory 201. When the engine starting device 100 is replaced, the code decoding control unit 5 registers the second ID code of the transmission data and the memory 8 in the memory 8 when the engine starting device 100 is replaced. However, the code decoding control unit 23 determines that the transmitted second ID code and the second regular ID code registered in the memory 201 match. Is determined not to match. Therefore, the engine is not started.

Therefore, even if the engine starting device 100 is replaced, theft of the vehicle can be reliably prevented.

FIG. 4 shows a time chart when the engine is started by key operation.

Time T20 shown in FIG. 4 indicates that the key is inserted into the key insertion slot of the ignition switch and the ignition switch is turned on. Then, between the time T20 and the time T21, similarly to the operation performed between the time T0 and the time T1 shown in FIG. The code is collated with the code, and if it is determined that they match, each detection circuit 2
8, 29 and the ECCS circuit 16 are started up, and the respective circuits 28, 2 are turned on by the power-on reset circuit 40.
9 and 16 are reset (time T21).

Thereafter, the initialization signal S1 is transmitted from the second communication circuit 204 of the ECCS circuit 16 to the first communication circuit 203 of the code decoding control unit 23, so that the code decoding control unit 23 is initialized and the first communication Circuit 203
, An engine start determination signal S2 for determining the engine start method is transmitted to the third communication circuit 102 of the engine starter 100 (time T22).

After the initialization signal S1 is transmitted to the first communication circuit 203 of the code decoding control section 23, the initialization signal S4 is transmitted from the first communication circuit 102 to the second communication circuit 204 of the ECCS circuit 16 at time T23. The initialization signal S4 causes the ECCS circuit 1
6 is initialized.

On the other hand, when the third communication circuit 102 of the code decoding control section 5 receives the engine start determination signal S2, the code decoding control section 5 starts the engine by the engine starting device 100 or starts the engine by key operation. Or a signal indicating whether to register the second ID code from the third communication circuit 102 to the first communication circuit 2.
Send to 03. Here, since the fixed receiver 2 has not received transmission data from the portable receiver 1 and the second ID code has already been registered in the ID code memory 8, the engine is started by key operation. Therefore, no signal is transmitted from the third communication circuit 102 to the first communication circuit 203.

If the signal decoding control section 23 does not receive a signal from the third communication circuit 102 within a predetermined time after transmitting the engine start determination signal S2, it determines that the engine is started by a key. Then, the code decoding control unit 23 determines the ID code comparison circuit 2 based on the state of the detection output of the ignition switch detection circuit 28, the ACC switch detection circuit 29, and the key switch detection circuit 9.
6 outputs a start permission signal to the ECCS code generation circuit 27. In response to the start permission signal, the ECCS code generation circuit 27 outputs a start lock release signal, and the engine can be started by manual operation of the key.

[0049]

According to the first and second aspects of the present invention, even if the engine starting device is replaced, the engine cannot be started with the replaced ID code of the second portable transmitter, so that the vehicle can be securely stolen. Can be prevented.

According to the third and fourth aspects of the present invention, the second I
Registration of the D code can be easily performed, and therefore, even if the vehicle is already equipped with the vehicle anti-theft device,
If the engine starting device is retrofitted, the engine starting system can be incorporated.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an engine starting system according to the present invention.

FIG. 2 is a time chart showing an operation of each circuit in a registration mode.

FIG. 3 is a time chart showing an operation of starting an engine by an engine starting device.

FIG. 4 is a time chart showing an operation of starting an engine by a key operation.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 2nd portable transmitter (2nd portable transmission means) 5 Code decoding control part 8 ID code memory (2nd storage means) 100 Engine starting device 200 Vehicle anti-theft device 201 ID code memory (storage means, 3rd storage) means)

Claims (4)

[Claims] 1. A first I transmitted from a first portable transmitting means.
D code is received, and it is determined whether or not the received first ID code matches a pre-registered regular ID code. If they do not match, the engine start is prohibited. A vehicle anti-theft device for permitting manual start of the engine; receiving engine start command data including a second ID code transmitted from the second portable transmission means; and receiving a second ID code in the received engine start command data. And an engine starter for starting the engine when it is determined whether or not the second ID matches the previously registered regular ID code. A storage means for storing a code is provided in the vehicle anti-theft device, and the engine starting device transmits the engine starting transmitted from the second portable transmitting device. Command data, the vehicle antitheft device determines whether or not the second ID code in the received engine start command data matches the regular ID code stored in the storage means. Release the prohibition of starting the engine when it is determined that
An engine starting system wherein an engine is started by an engine starting device. 2. The first I transmitted from the first portable transmission means.
A first fixing receiving means for receiving a D code, and a first regular I
The first storage means storing the D code, and determining whether the first regular ID code stored in the first storage means matches the first ID code received by the first fixing receiving means. A vehicle anti-theft device having first determining means for permitting manual engine start when it is determined that the engine start command is received, and a second engine receiving command data including a second ID code transmitted from the second portable transmitting means. 2 receiving means for fixing, a second storage means for storing a second regular ID code,
A second determining means for determining whether the second regular ID code stored in the second storage means matches the second ID code in the engine start command data received by the second fixing receiving means; An engine starting device for starting the engine when the second determining means determines that the second regular ID code stored in the second storage means matches the second ID code received by the second fixing receiving means; An engine starting system comprising: a third storage unit that stores the second regular ID code provided in the vehicle antitheft device; and a second storage unit that stores the second determination ID code in the second storage unit. 2
The regular ID code and the second I received by the second fixing receiving means.
When it is determined that the D code matches, the transmission means for transmitting the received second ID code to the vehicle antitheft device is provided in the engine starting device, and the first determination means is configured to transmit the second ID code transmitted by the transmission means.
Code and the second normal I stored in the third storage means.
An engine starting system characterized in that it is determined whether or not the D code matches, and when it is determined that the D code matches, the engine is started by the engine starting device. 3. When the second regular ID code is not stored in the second and third storage means, when the engine is started by the first portable transmission means, the vehicle anti-theft device and the engine start device are activated. When the engine start command data is transmitted from the second portable transmission means in the registration mode, the second ID code in the engine start command data is changed to the second,
3. The engine starting system according to claim 2, wherein said engine starting system is registered in said third storage means. 4. An ID code registration method for an engine start system according to claim 1, wherein when the second ID code is not stored in the storage means, when the engine is started by the first portable transmission means, When the vehicle anti-theft device is set to the registration mode and engine start command data is transmitted from the second portable transmission unit, the second ID code in the engine start command data is registered in the storage unit. System ID code registration method.